Peel and wash the carrots. Leek clean, wash. Peel onion and garlic. Cut everything into fine cubes. Heat the oil in a pan and fry the minced meat for about 10 minutes while turning.
After about 6 minutes add the vegetable cubes. Stir in tomato paste and roast briefly. Deglaze with red wine, bring to the boil and reduce by half. Add the tomatoes and chop with a spatula.
Season with thyme and basil. Bring to the boil and simmer for about 10 minutes. Wash, clean and cut the zucchini into six. Hollow out sixths on one side each. Season bolognese with salt, pepper and sugar.
Fill the zucchini with the sauce, sprinkle with cheese. Place in an ovenproof dish or on the greased fat pan of the oven and bake in the preheated oven (electric oven: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 20 minutes.
Garnish with thyme.